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Re: what i need is a little attention-RE [linux-lvm] SoftRaid and LVM Jean-Eric Cuendet

some month's ago i had a running LVM over sofware RAID-0 setup
i have currently also a normal VG ( PV's are normal partitions) wich has no troubles with ext2 nad reiserfs
but the new VG (containing striped LV's) which is
/dev/md6 linear software RAID
/dev/md7 linear software RAID

i can not format with ext2 or reiserfs , when i try mke2fs mkreiserfs they segfaults
because of the troubles with ext2 and reiserfs i think that i can not be sure that everything with the LV's works
but probably i'll try cpio-ing my installation over it and give it a try

i'm running ABIT's BP6 2xCelleron533 512Mb RAM 2xWD 30Gb 1xMaxtor 40Gb
raidtools-0.90 lvm-1.0.1rc2 e2fsprogs1.23 1.24 1.24a reiserfs-progs-3.x.0j

and one more question about the min-max
i don't speak "C" can you tell me how to do it with pre linux-2.4.9patches
wich i wont to aply to linux-2.4.10pre2 and they are giving me problems with min-max definition

Jean-Eric Cuendet wrote:

I'll give you my setup.
I have a 5 36Gb SCSI disks machine which do MD+LVM+ext2 on them
Each disk is splitted in 4 (~9Gb each partition) and then grouped 5 by 5
to form 4 MD (md5, md6, md7, md8) each ~36Gb in RAID5.
Then these 4 MDs are added in a VG and LVs are created for each need
(CVS, HOMES, FILES, ...). The machine is a PIII 733 with 256Mb RAM and has RH7.1 installed
I use MD 0.90.0, LVM 1.0.1rc1 and e2fsprogs 1.23. I have NO reiserfs nor
XFS nor JFS.

All that works fine for me with little problems since upgrade to

Each partition on the physical disk is marked as fd (Linux RAID
autodectect) then pvcreate is made on /dev/md[5678] . There is no need
to put either "Linux Native (83)" nor "Linux LVM (8e)" on the /dev/md1
or something like that. Just the fd on physical partitions will do the

Hope this helps.

-----Original Message-----
From: svetljo [mailto:galia st-peter stw uni-erlangen de] Sent: mardi, 4. septembre 2001 19:44
To: bluca comedia it; linux-lvm sistina com
Subject: Re: what i need is a little attention-RE [linux-lvm] SoftRaid and LVM Jean-Eric Cuendet

well the problem currently is that i can not format the LV with ext2 or reiserfs
in the beginning i could access the LV only with IBM's JFS and i had troubles mounting it with XFS
but i've upgraded to 2.4.10-pre2-xfs-cvs and now i have no problem with XFS but i still have the problem with ext2 and reiserfs which i think is not normal
and i'm wondering whether it's safe to use the LV

i used e2fsprogs-1.23 and 1.24 and reiserfs progs  3.x.0j
but when i try to format the LV mke2fs and mkreiserfs segfaults

and i can format normal partitions and software raid with mke2fs and mkreiserfs

the VG :

/dev/md6  software linear RAID
/dev/md7 software linear RAID

the LV's are striped over the 3 PV's

Luca Berra wrote:

On Tue, Sep 04, 2001 at 07:08:10PM +0200, svetljo wrote:

if smbd take a look at all meseages with sender svetljo and with subject
releated to PB's with LVM on software RAID
i think he'll get the idea what is all about

OK i am using lvm over softraid
can you please do a recap.


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/dev/hde1  dos partition
/dev/hde5 /boot
/dev/hde6 ------X----------> /dev/md7 linear software RAID  ------------------------------------------------ |
/dev/hde11------|              ( raid-devs hde6 hde11)                                                       |
/dev/hde7--------------------X---->   VG wish   PV's hde7 hdg8 hdh5                                          |
/dev/hde8 -----------X---> that is /dev/md0 sofware RAID-0                                                   |
/dev/hde9 swap       |       |                                                                               |
/dev/hde10 ----------|-------|-----------X-------> /dev/md1 software RAID-0                                  |                 
                     |       |           |                                                                   |
/dev/hdg1------------|-------|-----------|-------X------> /dev/md6 linear software RAID----------------------X--> VG myData
/dev/hdg5------------|-------|-----------|-------X           ( raid-devs hdg1 hdg5 hdg6 hdg12 )              | PV's hdh10 md6 md7
/dev/hdg6------------|-------|-----------|-------X                                                           |
/dev/hdg7------------|-------|-----------|-------|------------X-----> /dev/md8 software RAID-0               |
/dev/hdg8 -----------|-------X           |       |            |       (raid-devs hdg7 hdh8 )                 |
/dev/hdg9 -----------|-------|-----------X       |            |                                              |
/dev/hdg10 ----------X       |           |       |            |                                              |
/dev/hdg11 swap      |       |           |       |  	      | 					     |
/dev/hdg12 ----------|-------|-----------|-------|            |                                              |
		     |	     |		 |		      | 				             |
/dev/hdh1  dos partiton      |           |                    |  	                                     |
/dev/hdh5 -----------|-------|           |                    |   	                                     |
/dev/hdh6 -----------|                   |                    |                                              |
/dev/hdh7--------------------------------|                    |                                              |
/dev/hdh8-----------------------------------------------------|         				     |
/dev/hdh9 swap                                                      				             |

 X notifies conection   

i hope it's almost understandable now

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